NEW YORK — New York Attorney General Andrew Cuomo is investigating short sellers of Lehman Brothers Holdings Inc., American International Group Inc. and other financial companies to see if investors spread false information to drive down stock prices.

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A prominent white nationalist is suing Twitter for banning his accounts at a time when social networks are trying to crack down on hateful and abusive content without appearing to censor unpopular opinions.

The social media service Twitter is believed to have suspended thousands of accounts for being automated bots, or for other policy violations, drawing outcry from fringe conservative media figures who lost followers in the move.

Two senior U.S. Geological Survey officials have stepped down after Interior Secretary Ryan Zinke demanded that they provide his office with confidential data on the National Petroleum Reserve-Alaska before it was released to the general public.